Sunday , April 11 2021

There is a huge cavity beneath the most threatened glacier of the Antarctic



Antarctica is the source of bad news that only continues to give. The Thwaites glacier, among the most threatened ice pieces on the continent, is still more incisive than previously reported. Its melting from above and below is being helped by cavities recently discovered under the ice, as reflected in the advances of science on Wednesday.

The hole open to the ice has a two-third footprint of the size of Manhattan and is high enough to fit three times to the statue of freedom. In other words, no dentist is not resolving this. Instead of that, he could spell fate not only in Manhattan, but in other coastal areas, accelerating the destruction of Thwaites, who pushed more ice to the sea.

The Thwaites Glacier is located in the western Antarctic, an area that faces what could be a fleeting grave due to geography and the inescapable heat. The rock of the soil under Thwaites and other glaciers in the region descends down towards the interior, allowing warm water to reach glaciers from below. The region is the fastest part of Antarctica fusion, and losing ground ice could lead to more than 3.05 m of sea level rise.

The discovery of the cavity under the Thwaites Glacier along with a series of other baffling features offer a new wrinkle in the historical history of the western Antarctic. Scientists used a combination of radar penetrating the ice on NASA aircraft and European satellite data to capture what is happening. The measures resolve the large-scale details of what happens when the ice is found with the rock of the soil. Or, it is more accurate, where the ice does not meet the rock of the soil.

The data revealed bostonated caves under the ice, the largest of which is the average Manhattan lagoon. This cavity is large enough to contain 14,000 million tons of ice or 5.6 million Olympic-size pools. On the contrary, it allows hot water to rise beneath the glacier and the speed along its retreat. Oh, i could be growing.

"[The size of] a cavity under a glacier plays an important role in the grave, "said the chief author of the study, Pietro Milillo, a scientist at the NASA Jet Propulsion Laboratory that directed the study, said in a press release. "As more heat and water go down the glacier, it melts faster."

The glacier is not removed uniformly. The fastest withdrawal of floating gel is approximately one half miles per year, with several areas that can be seen up to 650 feet per year. The findings also show that the ground line, where the ice is found with the rock of the soil, migrates to a much larger scale than previously thought due to the tide mixture, and includes channels under parts of the ice that They give access to hot water on the inside of the glacier. Ditto for the cavity of the monster.

All are important factors that are not included in the way researchers model the ice shelves and glaciers and could lead to an even faster retreat and a faster rise of sea level. Suddenly, this wild idea of ​​the Antarctic wall does not seem so extravagant.


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